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Polymer Additives
Lubrizol
Solplus™ polymeric dispersants, also known as hyperdispersants, are polymeric materials designed to offer significantly higher levels of performance for thermoplastics, thermosets and liquid colorants.

Solplus™ Polymeric dispersants for Plastics

Low throughput, poor viscosity stability, specks and unacceptable pellet quality are challenges during the dispersion process that traditional dispersants can’t always address. Whether you are dispersing pigments, fillers or additives, an efficient dispersant is required to address these production and quality challenges.

Dispersants like stearates, stearate acids and waxes show limitations in terms of performance and temperature resistance. A more effective solution is polymeric dispersants that can improve processing and deliver high quality end products.

Learn more about the functions of a good dispersant and how Lubrizol polymeric dispersants are unique and could be a better choice to meet your needs.
Polymeric dispersants

What is the role of dispersants?

Dispersants adsorb onto a particle surface, prevent re-agglomeration and stabilize the dispersion.

Dispersants
What are the functions of a good dispersant?
  1. Wetting of the particles
    Particle to particle attraction causes the viscosity of a pigmented system to increase. The presence of a polymeric layer around the particle reduces these attractive forces.
  2. Reduction in particle size
    Reducing particle size and narrowing the particle distribution can provide several benefits: a significant positive influence on coloristic properties, as well as gloss, transparency/opacity and speck reduction.
  3. Stabilization of the particle
    The presence of a stabilizing layer around the particle prevents them from flocculating (joining together). Preventing flocculation can help stop many problems occurring in a system and can result in more efficient grinds.

Surfactants and traditional dispersants are typically low molecular weight materials. They are often simple materials, with single anchoring and stabilization chains.

Discover more about Lubrizol Polymeric dispersants which are more efficient than traditional solutions.

How are Lubrizol polymeric dispersants different and why can they be a better choice?

Lubrizol Solplus™ polymeric dispersants, also known as hyperdispersants, are polymeric materials designed to offer significantly higher levels of performance. They are typically higher molecular weight, and this means they may contain multiple anchoring groups and stabilization chains. They can be tailored to work across a broader range of pigments or fillers and in different media.

Thanks to their unique structure, polymeric dispersants can provide specific benefits to polymer formulators and end-products manufacturers:
  • Higher quality
  • Improved flexibility
  • Increased productivity

How to select the right polymeric dispersant?

There are some key aspects to consider when selecting a polymeric dispersant:
- The particles to disperse: pigments or fillers
The dispersant needs to anchor strongly onto the pigment or filler, and different pigments can have very different surface chemistry. Organic pigments and Carbon Black disperse best with basic / cationic anchor groups. Inorganic pigments and fillers disperse best with acidic / anionic anchor groups.
- The system
The dispersant has to be soluble and compatible with the system in order to get a good stable dispersion, whether it is liquid or solid at room temperature.
- The application
The application and the processing conditions can influence the dispersant choice.

Discover Lubrizol polymeric dispersants offering for Polymers and select the most appropriate products depending on the application and the polymer.

Browse our Center and find out more about Polymeric dispersants and Lubrizol products:

Thermoplastics applications
Liquid colorants & dispersions
Thermosets applications

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Case Studies from Polymeric dispersants for Plastics

PP/Calcium Carbonate Masterbatch: Increase loading up to 85% and improve dispersion with Solplus™ DP310 hyperdispersant

Calcium carbonate masterbatch concentrates can typically achieve 75% loading with existing wax technologies. Now they can obtain higher filler loadings up to 85% with Solplus™ DP310 hyperdispersant. Its excellent dispersing capabilities helps improve manufacturing efficiencies and provide high quality PP masterbatch.

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Improve processability of highly loaded Nylon 6 masterbatch dispersions with Solplus™ DP320 hyperdispersant

Solplus™ DP320 hyperdispersant is a preferred option to meet the requirements for processing efficiency of nylon masterbatch compounds and to deliver good aesthetics.

It offers:

  • Improved processability resulting in an increase of overall throughput and a decrease in costs due to: lower filter pressure, reduced extruder torque, effective dispersion
  • Increased color strength at low and high filler loading

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Downloads from Polymeric dispersants for Plastics

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